#!/usr/bin/python
# -*- coding: utf-8 -*-

# Copyright: (c) 2017, Bruno Calogero <brunocalogero@hotmail.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import absolute_import, division, print_function
__metaclass__ = type

ANSIBLE_METADATA = {'metadata_version': '1.1',
                    'status': ['preview'],
                    'supported_by': 'certified'}

DOCUMENTATION = r'''
---
module: aci_switch_leaf_selector
short_description: Bind leaf selectors to switch policy leaf profiles (infra:LeafS, infra:NodeBlk, infra:RsAccNodePGrep)
description:
- Bind leaf selectors (with node block range and policy group) to switch policy leaf profiles on Cisco ACI fabrics.
version_added: '2.5'
options:
  description:
    description:
    - The description to assign to the C(leaf).
    type: str
  leaf_profile:
    description:
    - Name of the Leaf Profile to which we add a Selector.
    type: str
    aliases: [ leaf_profile_name ]
  leaf:
    description:
    - Name of Leaf Selector.
    type: str
    aliases: [ name, leaf_name, leaf_profile_leaf_name, leaf_selector_name ]
  leaf_node_blk:
    description:
    - Name of Node Block range to be added to Leaf Selector of given Leaf Profile.
    type: str
    aliases: [ leaf_node_blk_name, node_blk_name ]
  leaf_node_blk_description:
    description:
    - The description to assign to the C(leaf_node_blk)
    type: str
  from:
    description:
    - Start of Node Block range.
    type: int
    aliases: [ node_blk_range_from, from_range, range_from ]
  to:
    description:
    - Start of Node Block range.
    type: int
    aliases: [ node_blk_range_to, to_range, range_to ]
  policy_group:
    description:
    - Name of the Policy Group to be added to Leaf Selector of given Leaf Profile.
    type: str
    aliases: [ name, policy_group_name ]
  state:
    description:
    - Use C(present) or C(absent) for adding or removing.
    - Use C(query) for listing an object or multiple objects.
    type: str
    choices: [ absent, present, query ]
    default: present
extends_documentation_fragment: aci
notes:
- This module is to be used with M(aci_switch_policy_leaf_profile).
  One first creates a leaf profile (infra:NodeP) and then creates an associated selector (infra:LeafS),
seealso:
- module: aci_switch_policy_leaf_profile
- name: APIC Management Information Model reference
  description: More information about the internal APIC classes B(infra:LeafS),
               B(infra:NodeBlk) and B(infra:RsAccNodePGrp).
  link: https://developer.cisco.com/docs/apic-mim-ref/
author:
- Bruno Calogero (@brunocalogero)
'''

EXAMPLES = r'''
- name: adding a switch policy leaf profile selector associated Node Block range (w/ policy group)
  aci_switch_leaf_selector:
    host: apic
    username: admin
    password: SomeSecretPassword
    leaf_profile: sw_name
    leaf: leaf_selector_name
    leaf_node_blk: node_blk_name
    from: 1011
    to: 1011
    policy_group: somepolicygroupname
    state: present
  delegate_to: localhost

- name: adding a switch policy leaf profile selector associated Node Block range (w/o policy group)
  aci_switch_leaf_selector:
    host: apic
    username: admin
    password: SomeSecretPassword
    leaf_profile: sw_name
    leaf: leaf_selector_name
    leaf_node_blk: node_blk_name
    from: 1011
    to: 1011
    state: present
  delegate_to: localhost

- name: Removing a switch policy leaf profile selector
  aci_switch_leaf_selector:
    host: apic
    username: admin
    password: SomeSecretPassword
    leaf_profile: sw_name
    leaf: leaf_selector_name
    state: absent
  delegate_to: localhost

- name: Querying a switch policy leaf profile selector
  aci_switch_leaf_selector:
    host: apic
    username: admin
    password: SomeSecretPassword
    leaf_profile: sw_name
    leaf: leaf_selector_name
    state: query
  delegate_to: localhost
  register: query_result
'''

RETURN = r'''
current:
  description: The existing configuration from the APIC after the module has finished
  returned: success
  type: list
  sample:
    [
        {
            "fvTenant": {
                "attributes": {
                    "descr": "Production environment",
                    "dn": "uni/tn-production",
                    "name": "production",
                    "nameAlias": "",
                    "ownerKey": "",
                    "ownerTag": ""
                }
            }
        }
    ]
error:
  description: The error information as returned from the APIC
  returned: failure
  type: dict
  sample:
    {
        "code": "122",
        "text": "unknown managed object class foo"
    }
raw:
  description: The raw output returned by the APIC REST API (xml or json)
  returned: parse error
  type: str
  sample: '<?xml version="1.0" encoding="UTF-8"?><imdata totalCount="1"><error code="122" text="unknown managed object class foo"/></imdata>'
sent:
  description: The actual/minimal configuration pushed to the APIC
  returned: info
  type: list
  sample:
    {
        "fvTenant": {
            "attributes": {
                "descr": "Production environment"
            }
        }
    }
previous:
  description: The original configuration from the APIC before the module has started
  returned: info
  type: list
  sample:
    [
        {
            "fvTenant": {
                "attributes": {
                    "descr": "Production",
                    "dn": "uni/tn-production",
                    "name": "production",
                    "nameAlias": "",
                    "ownerKey": "",
                    "ownerTag": ""
                }
            }
        }
    ]
proposed:
  description: The assembled configuration from the user-provided parameters
  returned: info
  type: dict
  sample:
    {
        "fvTenant": {
            "attributes": {
                "descr": "Production environment",
                "name": "production"
            }
        }
    }
filter_string:
  description: The filter string used for the request
  returned: failure or debug
  type: str
  sample: ?rsp-prop-include=config-only
method:
  description: The HTTP method used for the request to the APIC
  returned: failure or debug
  type: str
  sample: POST
response:
  description: The HTTP response from the APIC
  returned: failure or debug
  type: str
  sample: OK (30 bytes)
status:
  description: The HTTP status from the APIC
  returned: failure or debug
  type: int
  sample: 200
url:
  description: The HTTP url used for the request to the APIC
  returned: failure or debug
  type: str
  sample: https://10.11.12.13/api/mo/uni/tn-production.json
'''

from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.aci.aci import ACIModule, aci_argument_spec


def main():
    argument_spec = aci_argument_spec()
    argument_spec.update({
        'description': dict(type='str'),
        'leaf_profile': dict(type='str', aliases=['leaf_profile_name']),  # Not required for querying all objects
        'leaf': dict(type='str', aliases=['name', 'leaf_name', 'leaf_profile_leaf_name', 'leaf_selector_name']),  # Not required for querying all objects
        'leaf_node_blk': dict(type='str', aliases=['leaf_node_blk_name', 'node_blk_name']),
        'leaf_node_blk_description': dict(type='str'),
        # NOTE: Keyword 'from' is a reserved word in python, so we need it as a string
        'from': dict(type='int', aliases=['node_blk_range_from', 'from_range', 'range_from']),
        'to': dict(type='int', aliases=['node_blk_range_to', 'to_range', 'range_to']),
        'policy_group': dict(type='str', aliases=['policy_group_name']),
        'state': dict(type='str', default='present', choices=['absent', 'present', 'query']),
    })

    module = AnsibleModule(
        argument_spec=argument_spec,
        supports_check_mode=True,
        required_if=[
            ['state', 'absent', ['leaf_profile', 'leaf']],
            ['state', 'present', ['leaf_profile', 'leaf', 'leaf_node_blk', 'from', 'to']]
        ]
    )

    description = module.params.get('description')
    leaf_profile = module.params.get('leaf_profile')
    leaf = module.params.get('leaf')
    leaf_node_blk = module.params.get('leaf_node_blk')
    leaf_node_blk_description = module.params.get('leaf_node_blk_description')
    from_ = module.params.get('from')
    to_ = module.params.get('to')
    policy_group = module.params.get('policy_group')
    state = module.params.get('state')

    # Build child_configs dynamically
    child_configs = [
        dict(
            infraNodeBlk=dict(
                attributes=dict(
                    descr=leaf_node_blk_description,
                    name=leaf_node_blk,
                    from_=from_,
                    to_=to_,
                ),
            ),
        ),
    ]

    # Add infraRsAccNodePGrp only when policy_group was defined
    if policy_group is not None:
        child_configs.append(dict(
            infraRsAccNodePGrp=dict(
                attributes=dict(
                    tDn='uni/infra/funcprof/accnodepgrp-{0}'.format(policy_group),
                ),
            ),
        ))

    aci = ACIModule(module)
    aci.construct_url(
        root_class=dict(
            aci_class='infraNodeP',
            aci_rn='infra/nprof-{0}'.format(leaf_profile),
            module_object=leaf_profile,
            target_filter={'name': leaf_profile},
        ),
        subclass_1=dict(
            aci_class='infraLeafS',
            # NOTE: normal rn: leaves-{name}-typ-{type}, hence here hardcoded to range for purposes of module
            aci_rn='leaves-{0}-typ-range'.format(leaf),
            module_object=leaf,
            target_filter={'name': leaf},
        ),
        # NOTE: infraNodeBlk is not made into a subclass because there is a 1-1 mapping between node block and leaf selector name
        child_classes=['infraNodeBlk', 'infraRsAccNodePGrp'],

    )

    aci.get_existing()

    if state == 'present':
        aci.payload(
            aci_class='infraLeafS',
            class_config=dict(
                descr=description,
                name=leaf,
            ),
            child_configs=child_configs,
        )

        aci.get_diff(aci_class='infraLeafS')

        aci.post_config()

    elif state == 'absent':
        aci.delete_config()

    aci.exit_json()


if __name__ == "__main__":
    main()
